Answer: This point begins from the shattering.
Physicists admit that the more they penetrate matter, they “lose” particles. Each particle becomes a kind of a “cloud,” and these clouds mix up and together become very thick fog.
With the point in the heart things aren’t that simple either. It is a concept that contains all of the Light of Infinity, but in the opposite form. Thus it seems to us like a spark. It appears in its minimal form so that we will be able to hold on to this initial thread of connection.
From the 4th part of the Daily Kabbalah Lesson 12/21/11, Baal HaSulam, “The Freedom”